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path: root/drivers/net/usb/rndis_host.c
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Diffstat (limited to 'drivers/net/usb/rndis_host.c')
-rw-r--r--drivers/net/usb/rndis_host.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index cd991a0f75bb..1ebe3259be0d 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -512,11 +512,19 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
}
tmp = le32_to_cpu(u.init_c->max_transfer_size);
if (tmp < dev->hard_mtu) {
- dev_err(&intf->dev,
- "dev can't take %u byte packets (max %u)\n",
- dev->hard_mtu, tmp);
- retval = -EINVAL;
- goto fail_and_release;
+ if (tmp <= net->hard_header_len) {
+ dev_err(&intf->dev,
+ "dev can't take %u byte packets (max %u)\n",
+ dev->hard_mtu, tmp);
+ retval = -EINVAL;
+ goto fail_and_release;
+ }
+ dev->hard_mtu = tmp;
+ net->mtu = dev->hard_mtu - net->hard_header_len;
+ dev_warn(&intf->dev,
+ "dev can't take %u byte packets (max %u), "
+ "adjusting MTU to %u\n",
+ dev->hard_mtu, tmp, net->mtu);
}
/* REVISIT: peripheral "alignment" request is ignored ... */